Am 15.11.2016 um 06:00 schrieb Borden Rhodes: > I start blindly casting whatever btrfs spells I can find on the > Internet to fix 'no space left on device' errors. One of them > eventually works and df -h correctly reports the free space in my /var > partition and Debian boots normally again. > > My question, therefore, is whether this is a btrfs bug that got > triggered by the full /var partition or whether Debian is designed to > break irrecoverably when /var fills up. Any ideas of what happened? > Does anything on the Debian Wiki on Btrfs [1] seem familiar? Other than that I can only guess, but maybe check the SMART information of your disk(s) for excessive errors, as it _could_ be that defective sectors prevent Btrfs from doing it's COW magic. [1] https://wiki.debian.org/Btrfs#WARNINGS
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